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Service engine soon light connector

Tiny
TOPCATTCF
  • MEMBER
  • 1991 CHEVROLET TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 196,000 MILES
'91 K1500 with many miles, luv it. Runs fine when warm, but having trouble with cold starts, engine won't start off at 1500 warm up like it should, hovers around 800 rpm, takes repeated tries to get started. Service engine soon light on, so ECM has a code for me. How do I read it? Chilton manual pretty useless for help. Is there a plug somewheres? Isn't this vehicle pre OBD I? Short with paper clip and count blinks like on my old '81 cutlass? Winter coming, need my ride dependable pronto. Thanks for your help.
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Tuesday, November 9th, 2010 AT 5:22 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Its on location C2 Under left side of dash, to left of column. this guide can help

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.


https://www.2carpros.com/forum/automotive_pictures/12900_dlc_24.jpg

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Tuesday, November 9th, 2010 AT 6:18 PM

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